This is cool: a paper on the effectiveness of backscatter devices. They can
easily be fooled, it turns out.
http://m.boingboing.net/2010/12/11/pornoscanners-trivia.html
The article summarizes the result of the peer-reviewed paper, and contains a
pointer to the original paper, images and all:
"In case you were wondering whether pornoscanners are harder on the
vast majority of innocent, non-terrorist fliers, or the minuscule minority of
terrorists, wonder no more. From Leon Kaufman and Joseph W. Carlson's "An
evaluation of airport x-ray backscatter units based on image characteristics,"
published in the Journal of Transportation Security:" ..
-- Owen
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